Listening to songs, to the news, to stories and to movies and TV (with subtitles is great): all of these are excellent for "growing" your English listening and vocabulary. Here are some useful sites:

http://www.esl-lab.com/

http://www.bbc.co.uk/worldservice/learningenglish/multimedia/archive_p_and_p.shtml

https://www.bbc.co.uk/search?q=6%20Minute%20English&suggid=urn%3Abbc%3Aprogrammes%3Ap02pc9tn

https://www.esolcourses.com/content/topicsmenu/advanced-ielts.html

Cambridge B2 First listening practice can be found here. If you want more, let me know and I can upload some more sample tests.